#make sure that 'x' is less than 'y'

x = input('please enter a numerical value')
print x
y = 0
while y < x:
  y = input('please enter a numerical value larger than the previous')
  if y < x:
    print "Invalid Input"
  print y

def fizzbuzz(x, y):
	int = 0
	for int in range(x, y):
		if (int%3==0 and int%5==0):
			print "fizzbuzz"
		elif (int%3==0):
			print "fizz"
		elif (int%5==0):
			print "buzz"
		else:
			print int

fizzbuzz()